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lutik1710 [3]
4 years ago
11

Unknown value please help !!!!!

Mathematics
2 answers:
horsena [70]4 years ago
7 0
The answer would be 15
dolphi86 [110]4 years ago
5 0

The answer is 15.

You can use the butterfly method. Multiply 42 times 5. Then divide that by 14.

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How is this written in an expanded version?
Yuri [45]

Powers distribute over multiplications:

(ab)^c = a^c\cdot b^c

So, you have

(3k^5)^2 = 3^2 \cdot (k^5)^2

Now, 3^2 is simply 9.

As for (k^5)^2, we have to use the rule

(a^b)^c = a^{bc}

to get

(k^5)^2=k^{5\cdot 2}=k^{10}

So, the final answer is

(3k^5)^2 =9k^{10}

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